Thanks for all the suggestions everyone!
I think for the future I may use the magnetic vent covers...
But for this event I used scotch blue painters tape and then put neon pink duck tape over it. Gave it plenty of contrast on the DGM paint...plus got comments for reppin sti colors haha.
Got 2nd in my class at the event...lost to another ltd brz but he had 225 stickier tires